Add management command to sync EveryPolitician UUID

pombola/south_africa/management/commands/south_africa_sync_everypolitician_uuid.py

@@ -0,0 +1,46 @@
+from everypolitician import EveryPolitician
+
+from django.core.management.base import BaseCommand
+
+from pombola.core.models import Person
+
+
+class Command(BaseCommand):
+    help = "Sync EveryPolitician UUID to Person's identifiers array"
+
+    def add_arguments(self, parser):
+        parser.add_argument('everypolitician_countries_json_git_ref',
+                            default='master', nargs='?',
+                            help="A git ref from the everypolitician-data repo")
+
+    def handle(self, **options):
+        verbose_level = options['verbosity']
+
+        url_template = ('https://cdn.rawgit.com/everypolitician/everypolitician-data/'
+                        '{git_ref}/countries.json')
+
+        url = url_template.format(git_ref=options['everypolitician_countries_json_git_ref'])
+
+        ep = EveryPolitician(countries_json_url=url)
+        south_africa_assembly = ep.country('South-Africa').legislature('Assembly').popolo()
+
+        id_lookup = {}
+        for popolo_person in south_africa_assembly.persons:
+            id_lookup[popolo_person.identifier_value('peoples_assembly')] = popolo_person.id
+
+        error_msg = u"No EveryPolitician UUID found for {0.id} {0.name} https://www.pa.org.za/person/{0.slug}/\n"
+        for person in Person.objects.filter(hidden=False):
+            uuid = id_lookup.get(str(person.id))
+            if uuid is None:
+                verbose_level > 1 and self.stderr.write(error_msg.format(person))
+                continue
+            identifier, created = person.identifiers.get_or_create(
+                scheme='everypolitician',
+                identifier=uuid,
+            )
+            if verbose_level > 0:
+                if created:
+                    msg = u"Created new identifier for {name}: {identifier}"
+                else:
+                    msg = u"Existing identifier found for {name}: {identifier}"
+                self.stdout.write(msg.format(name=person.name, identifier=identifier.identifier))